- Companies
- Builders
- Mountain Ash
- Build-Tec Contractors Limited
Build-Tec Contractors Limited
- Company number
- 06712559
- Incorporated
- 1 Oct 200818 years trading
- Registered office
- Cae Glas Cynon Terrace, Penrhiwceiber, Mountain Ash, CF45 3SU
- Nature of business
- Construction of domestic buildings
Build-Tec Contractors Limited is a 18-year-old private limited company registered in Mountain Ash, company number 06712559, one of 24 building contractors in Mountain Ash. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Build-Tec Contractors LimitedOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets up £1,047 (+3.1%) on the year before, to £34K.
- Net assets rose in 3 of 9 year-on-year comparisons on record.
- Current assets of £140K against £181K owed within a year: 0.8 times cover.
- 3 employees on average, down from 4 the year before.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | £34K | £140K | £181K | 3 | |
| 31 Oct 2024 | £33K | £150K | £197K | 4 | |
| 31 Oct 2023 | £34K | £164K | £146K | 4 | |
| 31 Oct 2022 | £61K | £238K | 4 | ||
| 31 Oct 2021 | £143K | £378K | £254K | 4 | |
| 31 Oct 2020 | £188K | £349K | £182K | 4 | |
| 31 Oct 2019 | -£128K | -£273K | £163K | 4 | |
| 31 Oct 2018 | -£43K | -£108K | £83K | ||
| 31 Oct 2017 | -£51K | -£75K | £75K | ||
| 31 Oct 2016 | £69K | £54K | £129K | £81K |
Public contracts won
Build-Tec Contractors Limited has one public sector contract award on record; the ones with their own published value total £35K (2026). Source: Contracts Finder and Find a Tender award notices. These were matched by the company's exact name because the notice gave no company number.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Cadarn Housing Group | Renewal of Garden Boundary Fence and Installation of Retaining Wall | £35K | 26 Jan 2026 |
Where Build-Tec Contractors Limited is registered
The registered office is in Mountain Ash (CF45), in the Rhondda Cynon Taf local authority area, Wales. Show CF45 3SU on a map.
Other trade companies in CF45
- Pro Guard Home Improvements LtdRoofers
- Smiths Rendering & Resin LtdBuilders
- Ironrootslandscaping LimitedLandscapers and gardeners
- Lee Griffiths Contractors LimitedFinishing trades
- Theglossboss LtdCleaning companies
- Brickzen Constructions LtdInstallers
- STR Drylining LtdBuilders
- Greenvoltinfrastructure LtdCivil engineering
What happens if Build-Tec Contractors Limited files late
Companies House charges an automatic penalty the day after the deadline, and it rises the longer the accounts are late. These are the dates for this company's accounts due on 31 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 2028 | another 10% of any unpaid tax |
For returns filed on or after 1 April 2026. Late three times in a row and the £200 penalties become £1,000 each.
Company details
As held on the Companies House register.
- Company number
- 06712559
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 1 October 2008 (18 years ago)
- Registered office
- Cae Glas Cynon Terrace, Penrhiwceiber, Mountain Ash, CF45 3SU
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 21 September 2025
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Mountain Ash
Other active building contractors registered in Mountain Ash.
- C&L Rendering Ltd2021
- Collinspropertygroup Ltd.2021
- Coomer's Developments Limited2025
- D.Trow Carpentry Ltd2021
- Diamond Design Interiors Building and Maintenance Limited2023
- GSP Electricians Ltd2021
- Jiga Hertz Electrical Engineering and General Services Limited2020
- JJ Brickwork and Stonework Specialists Limited2020
All building contractors in Mountain Ash · All trades in Mountain Ash · Builders across the UK
Frequently asked questions
When are Build-Tec Contractors Limited's accounts due?
Build-Tec Contractors Limited's next accounts are due at Companies House by 31 July 2027 (in 291 days), covering the period to 31 October 2026.
When is Build-Tec Contractors Limited's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is Build-Tec Contractors Limited still trading?
Build-Tec Contractors Limited is listed as active on the Companies House register (checked 13 Oct 2026). Active means it has not been dissolved or entered insolvency; it does not show whether it is currently taking on work.
What does Build-Tec Contractors Limited do?
Build-Tec Contractors Limited is registered under Construction of domestic buildings (SIC 41202).
How old is Build-Tec Contractors Limited?
Build-Tec Contractors Limited was incorporated on 1 October 2008, 18 years ago.
Has Build-Tec Contractors Limited won public sector contracts?
Yes. Build-Tec Contractors Limited has one contract award from public bodies on Contracts Finder and Find a Tender (those with their own published value total £35K), most recently from Cadarn Housing Group.
What is the penalty if Build-Tec Contractors Limited files its accounts late?
Companies House charges £150 if the accounts are up to 1 month late, £375 up to 3 months, £750 up to 6 months and £1,500 after that, doubled if the previous year's accounts were also late. HMRC charges £200 for a CT600 filed a day late and another £200 at 3 months.
Official records
View Build-Tec Contractors Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 Oct 2026). Deadlines are worked out from the register and assume a standard accounting period; a change of year end or a short period moves them. This page is general information, not tax or accountancy advice.